Syringe plunger lock



FIG. 1 is a front elevation view of a syringe plunger lock showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a top, left, front perspective view thereof;

FIG. 8 is a top, right, rear perspective view thereof;

FIG. 9 is a bottom, left, front perspective view thereof; and,

FIG. 10 is bottom, right, front perspective view thereof. 

CLAIM The ornamental design for a syringe plunger lock, as shown and described. 